91 citations · 674 across the 41 of their papers we have counts for
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Entanglement bipartitioning and tree tensor networks
Kouichi Okunishi, Hiroshi Ueda, Tomotoshi Nishino
We propose the entanglement bipartitioning approach to design an optimal network structure of the tree-tensor-network (TTN) for quantum many-body systems. Given an exact ground-sta…
Automatic structural optimization of tree tensor networks
Toshiya Hikihara, Hiroshi Ueda, Kouichi Okunishi +2
Tree tensor network (TTN) provides an essential theoretical framework for the practical simulation of quantum many-body systems, where the network structure defined by the connecti…
Extracting a function encoded in amplitudes of a quantum state by tensor network and orthogonal function expansion
Koichi Miyamoto, Hiroshi Ueda
There are quantum algorithms for finding a function satisfying a set of conditions, such as solving partial differential equations, and these achieve exponential quantum speedu…